Impression-platen.



A. BOOMERSHINE.

IMPRESSI'ON PLATEN.

APPucmou men AUG. 19, 1915.

1 ,1 97,5 98. Patented Sept. 12, 1916.

nrrnn srarns Parana onsron.

ADAM BOOMERSHINE, 0F DAYTON, OHIO, ASSIG-NOR TO MERCANTILE CORPORATION, OF DAYTON, OHIO, A CORPORATION OF NEW YORK.

IMPRESSION-PLA'I'EN.

Application filed August 19, 1915.

To all whom it may concern Be it known that I, ADAM BOOMERSHINE, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Impression-Platens, of which the following is a full, clear, and exact description.

This invention relates to certain new and useful improvements in impression platens for printing machines and is particularly adapted for use in the printing corner cards of envelops. When corner cards (2'. e. the senders name and address) are printed in rotary machines it has been customary to use I a roller with a make ready surface which was of an area equal to or greater than the area of the face of the envelop. With this arrangement it has been found diflicult to build up the make ready to a uniform height over the entire surface of the envelop. Consequently the envelop tended to slip in pass ing between the type roll and the platen roll. This resulted in poorly alined printing of the corner card which necessitated scrap-- ping a large number of printed envelops.

To obviate these difficulties I have provided a platen which has the greater portion of the area coming in contact with the envelop in the form of a spring pressed plate. The make ready pad is retained but is greatly diminished in size so that the make ready portion merely serves as a surface or backing for the portion of the envelop which is being printed and the spring platen forms the backing for the remaining area of the envelop. The springs compensate for any irregularities in the thickness of the envelop and serve to hold the platen in uniform contact with the envelop and prevent slipping during the printing operation.

In the drawings Figure 1 shows in elevation the impression roll with made ready pad and spring pressed plate carriedthereby. The type carrying roll is also shown with the type diagrammatically indicated thereon. Fig. 2 is an end view of the impression roll. Certain portions are shown in section in order to show the spring pressed plate. Fig. 3 shows diagrammatically the location of the printing roll, the impression roll and the envelop feeding rolls in an envelop machine.

In Fig. 3, 10 and 11 are the feeding rolls which advance the envelop along the path Specification of Letters Patent.

Patented Sept. 12, 1916.

Serial No. 46,239.

shown by the dotted line 12 to engage between the impression roll 13 and the type wheel 14. Roll 13 is mounted on shaft 15 which is ournaled in the machine frame 16 and driven by suitable gearing not shown. Roll is is mounted on shaft 17 similarly mounted in frame 16' and driven at the same peripheral speed, as roll 13 by gearing not shown. Shaft 15 carries make ready to operate in conjunction with type as shown diagrammatically at 18 (Fig. 1).

The mid portion of roll 13 is cut away at 19. This portion of the roll supports the plate 20 which is curved to correspond to the periphery of the mid portion 19 of roll 13. A number of holes 21 are drilled in the periphery of the mid portion 19 and these holes serve as pockets for a number of com pression springs 22. These springs press the curved plate 20 outwardly. To retain plate 20 to the roll 19 I provide a number of retaining screws 23. These screws are fastened into the mid portion 19 of roll 13 and their heads fall into countersunk holes 21 in the curved plate 20. It will be seen that the plate 20 has a limited outward movement being urged outwardly at all times by springs 22.

A certain portion of plate 20 at thecorner thereof is cut away to permit a make ready pad 25 to extend through the plate. The mid portion 19 of the impression roll 13 is recessed to receive a make ready pad 25. This make ready pad consists of a leather cushion 26 which is secured by bolt 27 to a brass or steel block 28 having a curved periphery. By removing the leather cushion, tissue or paper slips may be placed thereunder and if desired they may be glued to the curved face of the block and the surface of the cushion may thus be brought to an even height for contact with the type. The block 28 is secured bythe bolt 29 to a pair of clamping arms which are held on the driving shaft 15 by tightening the nut or bolt 29.

The operation of the devices is as fol lows: The envelop passes between rolls 13 and 14: and enters the bight of the rolls just after the edge 31 of the spring pressed plate 20 enters the bight of these rolls. The springs 22 serve to press the curved plate into uniform contact with the envelop and prevent any slipping. The envelop feeds through the rolls and eventually the make ready pad 25 comes under the portion of the envelop to be printed. At this time the type 18 are contacting with the opposite side of theenvelop and the corner card is printed. While the make ready pad is in contact with the envelop, the part of plate 20 shown at 32 in the drawings serves to assist in holding the envelop in proper position and also aids n feeding the envelop forward. By the employment of my spring pressed plate the number of improperly alined corner cards is reduced and the corresponding Waste in the making of envelops is also minimized.

It is to be understood that I do not limit myself to the precise form and construction shown and described in the drawings and the accompanying specification. What I claim as my invention is particularly pointed out in the appended claims.

I claim 1 1. In a deviceof the class described, in combination a rotary type carrier, an impression roll, a makeready pad rotating in unison with the impression roll and a spring pressed plate carried by the said roll to apply uniform pressure to a sheet or envelop passed between the impression roll and the type carrier.

2. In a device of the class described, in

combination, a type carrying roll, an impression roll, a spring pressed plate carried thereby, said plate being curved to correspond with the periphery of said impression roll, a make ready pad rotating in unison with the impression roll, said p'ad contacting with the back of the portion of the envelop to be printed and thereby taking an impression from the type on the type carrying roll, the saidspring pressed plate contacting with the remaining portion of the envelop in contact with said type roll and maintaining said envelop in proper position.

3. In a device of the class described, in combination, a rotary type carrying roll, and means for pressing an envelop uniformly against said roll, said means comprising a make ready pad adapted to contact with the portion of the envelop receiving the type impression, and a springpressed plate adapted to contact with the portion of the envelop not impressed by the type.

4. In a device of the class described, in combination, a type carrying roll, an impression roll, a driving shaft for said last mentioned roll, a make ready pad carried by said shaft and rotating in unison with said roll, anda spring pressed plate carried by the impression roll and adapted to press a sheet or envelop with a uniform pressure against the aforesaid type carrying roll.

5 In a device of the class described, in combination, a roll having a central portion of its periphery cut away, a second roll adjacent thereto, a plurality of yielding members rotating in unison with the impression roll and extending above the cut away portion, one of said members comprising a curved plate spring pressed outwardly to contact with the before-mentioned second roll, and a second of said members comprising a curved pad having a cushioned surface to cooperate with the aforesaid roll.

6. In a device of the class described, in combination, a type carrying roll, an impression roll, a make ready pad extending about the surface of the impression roll and adaptedto impress a portion of an envelop against type on a portion of the type roll, and a spring pressed curved plate carried by the impression roll and adapted to press the portions of the envelop which are not to be printed uniformly against the portions of the aforesaid type roll which do not carry type, whereby twisting of the envelop is prevented in its passage through the rolls.

7. In a device of the class described, in combination, a type carrying roll, an impression roll, a make ready pad extending about the surface of the impression roll and ada'ptedto impress a portion of an envelop against type on a portion of the type roll, a spring pressed curved plate carried by the impression rolland adapted to press the portions of the envelop which are not to be printed uniformly against the portions of the aforesaid type roll which do not carry type,'whereby twisting of the envelop is prevented in its passage through the rolls, and screws to limit the outward movement of the spring pressed plate and permit the plate to move from in position to out position under the influence of the springs. i

In testimony whereof I affix my signature in the presence of two subscribing witnesses.

ADAM BOOMERSHINE.

lVitnes ses: c

C. A. CRAIGHEAD, K. M. DEAVER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

